UEi EM151 Manuel utilisateur
TABLE OF CONTENTS
Safety Rules............................................................................... 2
Features...................................................................................... 3
Operating Instructions ............................................................. 4
EM151/EM201 Specifications ................................................ 6
Pressure Conversion Chart..................................................... 7
Warranty..................................................................................... 8
INTRODUCTION
The EM151 and EM201 provide a simple, time-
saving alternative to U-tube pressure measurements.
Use the UEi EM151 & EM201 to measure gas supply
and draft pressures in residential or light commercial
properties. The EM201 differential mode provides a
convenient method to measure pressure drops.
SAFETY RULES
WARNING!
Before every use, check to be sure the meter and its
tubing are free from breaks or blockage. While using
the meter, if you suspect gas is leaking, or if you can
smell gas, close off the gas supply and ventilate the
occupied space. Identify and repair the source of the
leak before continuing with the test.
In the interest of safety, this instrument should only
be used by trained, competent professionals who
know the hazards and consider the risks of working
on and with industrial equipment.
These meters do not measure water pressures;
under these conditions they will fail. Do not exceed
10 PSI input pressure
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3
FEATURES
EM151
• Singleinputtomeasurepressureto±20”wg
• TripleScale:inWG,mBarandPSI
• Ruggedized,includingrubberbootwithintegralmagnet
• Simpletwo-buttonoperation
• Measuresinincheswatergauge
• Autopower-offafter20minutes
• 3yearlimitedwarranty
EM201
• Dualinputdifferentialmeasurementto±60”wg
• TripleScale:inWG,mBarandPSI
• Ruggedized,includingrubberbootwithintegralmagnet
• MeasuresinincheswatergaugeandmBar
• Autopower-offafter20minutes
• Min/Maxvaluecapture
• DataHold
• Back-litdisplay
• 3yearlimitedwarranty
OPERATING INSTRUCTIONS
1. Zero the meter
Priortouse,themetermustbezeroed.Todothis,ensurethe
meterisinanon-pressurizedarea,andpressandholdthe
‘ZERO’buttonforapproximatelyfourseconds.Thedisplaywill
show‘888’toindicatethatthezerofunctionhasoccurred.
2. Measure Pressure
Connecttheflexibletubebetweenthemeterandthe
pressuresource.
TheEM201’spositiveinputistotherightwhenlookingatthe
frontoftheinstrument.Applyingapositivepressuretothis
portwilldisplayapositivereading.Theinputtotheleftisthe
negativeport.(Applyingapositivepressureherewilldisplaya
positivereading).Useeitherinputtomeasureasinglesource
byventingtheunusedinputtoatmosphere.Theinstrumentwill
continuallyprovideadifferentialreadingofthetwoinputs.
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3. SCALE
ToselectmBarpressthe“SCALE”buttonontheEM201.Press
“Scale”againtoreturntoinchesofwatergauge.Toselectscale
ontheEM151brieflypressthegreenbutton.
4. MIN/MAX (EM201 Only)
TheEM201willcapturevaluesforboththeminimumand
maximumvaluesread.Toresetzerotheinstrumentorsimply
powerthemeteroff,thenbackon.Capturedvaluescanbe
displayedineitherincheswatergaugeormBar.
5. HOLD (EM201 only)
TheEM201hasadisplayholdfeature.Pressthisduring
readingtofreezethedisplay.Pressagaintoreturnto
actualmeasurement.
6. BACKLIGHT (EM201 only)
TheEM201hasabacklitdisplay.Presstoturnonoroffthe
backlightfeature.
7. Over-range
Iftheinputexceedsthemeterrange“OL”willbedisplayed.
Immediatelydisconnectfromthepressuresupplysafelyto
reducechancesofdamagetotheinstrument.
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SPECIFICATIONS
EM151
Measurementrange: -20”to+20”WG
Minimumpressuredisplayed: 0.01”WG
Accuracy: ±0.02”<2”
±1%rdg>2”
Resolution: 0.01”-9.99”to+9.99”WG
0.1”<-10”,>+10”wg
Operatingrange: 0-40˚C,10-90%RH
noncondensing
Batterylife: 50hoursminwith
alkalinebattery
EM201
Measurementrange: -60to+60”WG
Minimumpressuredisplayed: 0.01”WG
Accuracy: ±0.02”<2”WG
±1%rdg>2”WG
Resolution: 0.001”-9.999”to+9.999”WG
0.01”<-10”,>+10”wg
Operatingrange: 0-40˚C,10-90%RH
noncondensing
Batterylife: 40hoursminwith
alkalinebattery
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Multiply By To Get
In.ofH2O 1.868 mmHG
In.ofH2O 0.074 inHG
In.ofH2O 0.249 kPa
In.ofH2O 249.1 Pascals
In.ofH2O 2.491 mBar
In.ofH2O 0.036 PSI
In.ofH2O 25.40 mmH2O
PRESSURE CONVERSIONS
WARRANTY
The EM151 or EM201 are warranted to be free from defects in
materials and workmanship for a period of three years from the date
of purchase. If within the warranty period your instrument should
become inoperative from such defects, the unit will be repaired
or replaced at UEi’s option. This warranty covers normal use and
does not cover damage which occurs in shipment or failure which
results from alteration, tampering, accident, misuse, abuse, neglect
or improper maintenance. Batteries and consequential damage
resulting from failed batteries are not covered by warranty.
Any implied warranties, including but not limited to implied
warranties of merchantability and fitness for a particular purpose,
are limited to the express warranty. UEi shall not be liable for
loss of use of the instrument or other incidental or consequential
damages, expenses, or economic loss, or for any claim or claims
for such damage, expenses or economic loss.
A purchase receipt or other proof of original purchase date will be
required before warranty repairs will be rendered. Instruments out
of warranty will be repaired (when repairable) for a service charge.
Return the unit postage paid and insured to:
UEi Service Department
8030 SW Nimbus, Beaverton, OR 97008
(503) 644-8723 • FAX: (503) 643-6322 • Email: [email protected]
This warranty gives you specific legal rights. You may also have
other rights which vary from state to state.
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